How I killed my Shanling CDT100A-Help!

[HCB]

I purchased this player off eBay a while back. There was confusion surrounding the working voltage and whether it was adjustable, ended up needing a stepdown transformer as it was 110 volts, non adjustable, and have had no issues. I had to put my equipmnet in storage for a short while, and when I set it up again, WITHOUT THINKING (DUUUHHH), I plugged it in to the 230 supply bypassing the stepdown. The lights came on (briefly) then it died. No fuses to be found, and nothing that I can see on the visible circuitboards that looks obviously cooked. I have been told that if the rectifier diodes in the power supply blew before the voltage regulators, it may be repairable without too much drama.(how do I test this with a simple multimeter?- I think I can localize these on the power supply board)
I am much happier putting speakers together and have very little actual electronic knowledge. I would greatly appreciate if anyone could tell me with some greater degree of certainty whether I should go to the hassle and expense of sending it to a reputable repairer (no agents in this part of the world for Shanling, and even if there were I am told they would not repair as I did not purchase from an authorized dealer....) This incident has has made me feel somewhat unwell! What a mindless mistake to make. Thanks for sharing your collective knowledge to help me decide whether to junk or not.

[analog_sa]

Originally posted by HCB
how do I test this with a simple multimeter

The fact that you even ask this indicates you really shouldn't attempt to repair it. On the bright side you probably don't need an official agent and any reasonably competent technician should be able to fix it. Quite likely the mains transformer is toast.

[HCB]

Thanks, I dont have any intention of trying a repair . Would be happy to change a fuse.... My main issue is whether its worth the time, effort and cost.

[guytou]

a lot of good wines in Australia .. . A good rule I use for myself is working on projects before eating (and drinking) , never after .

The first thing you could do with your DMM would be to check the primary of the supply transfo (if cutted or not) :

1 -Put your Dmm on ohmmeter (calibre 200 ohms or 1k).
2-take the player's wall plug in your hand.
3-put the DMM control pins on the wall plug pins .
4-turn on the player's power .
5-you would read something in the range of 50-100 Ohms . if not , your supply transfo is dead , it's time to order o new one with the right tension .

[mhifi508]

The fuse should protect in this kind of event. Symptom you described is like fuse blow.

There should be a fuse within the IEC power socket input. You need a small screw(driver) to ply open the catch to access the fuse.

[HCB]

Thanks! The last time I ever did any electronics was 25+ years ago. I did not expect to find the fuse within the IEC case. It is in fact labelled , but not easy to read out of direct light. It even had a spare fuse!. I changed this, everything working just perfectly!! So simple. I might have to pour a glass of fine Australian wine to celebrate
This has saved me a lot of time and trouble, I am sincerely grateful for the advice, as ridiculously simple as it all turned out to be.

[mhifi508]

Still prefer this type of old transformer power supply design. If you put a 230V to 110V switch mode power supply, that's the end of it. Changing fuse will not work.

Cheer,

[MadMutt]

What scares me is that you got the US plug to fit into an Aus socket.

Shanlings draconian rules regarding zero information, and no service help unless you buy it from them are two of the many reasons I will NEVER buy one.

Shanling can rot in hell as far as I'm concerned.

[mhifi508]

Strange thing is why Shanling (from China) supply equipment to Australia with 110VAC? China using 220VAC and it take some time for them to replace the power transformer to 110VAC if you order them from ebay.

[HCB]

Madmutt, might have a look at the male socket on the back of the player- no different from ours. The one going into the wall socket is of course different. The lead I used was already plugged in to the power board- easy enough to do.
I bought the player from a US ebay seller who assured me it was able to be set to 230volts...... he was wrong wasnt he? At least he eventually provided a step down transformer. Then I discovered that there was a problem with a lower output from one channel. Seller denied all knowledge (of course). I found an excellent technician who knew immediately the problem (DAC) and told me it was a "known issue" with this Shanling model. Repaired easily. It sounds excellent (with Western Electric valves), but I too would never buy another of their products. I also will think more than twice about buying used electronics from ebay sellers.